Introduction and Planning Guide

Voice Integration

The new voice features of the IBM 2212 integrate into existing data network infrastructures. You can reduce the cost of intra-company telephone calls and faxes, without compromising quality.

Three new adapters, based on DSP architecture, offer a variety of analog connectivity options:

2-port Analog FXS Voice/Fax CPCI

For direct connection to a single telephone set or fax machine

2-port Analog FXO Voice/Fax CPCI

For connection to an analog PBX or key system using a public network

2-port Analog E&M Voice/Fax CPCI

For direct connection to an analog PBX or key system

All adapters support Voice over Frame Relay.

Voice over Frame Relay

Figure 1-4. Use the 2212 Access Utility to Build Voice Networks

With the voice adapter, voice and fax can be integrated with data traffic on a frame relay network. This frame relay network reduces networking expense by:

• Multiplexing voice/fax and data on a single frame relay data link connection identifier (DLCI)

• Switching voice/fax between frame relay interfaces

• Ensuring voice quality on low speed lines with compression and silence suppression

The analog voice adapter performs voice compression. The IBM 2212 then sends the packets over the frame relay network. At the frame relay network receiving location, the voice traffic is decompressed and sent to the destination station or the private branch exchange (PBX). By using the same DLCI you can transport voice and data over the same frame relay interface. Voice over frame relay uses only permanent virtual circuits (PVC). Fragmentation is used to allow real-time voice and data frames to share the same interface. The user statically configures a maximum of 8 remote node connections to each voice interface. Enhancements to Bandwidth Reservation System classify voice traffic to ensure the quality of voice on low-speed links.